Patents by Inventor Jiamin Deng

Jiamin Deng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10497914
    Abstract: The invention belongs to the technical field of the preparation of lithium ion batteries, and particularly relates to a water-based composition used for modifying diaphragm of lithium ion batteries and a polyolefin diaphragm for lithium ion batteries and lithium ion batteries. The invention aims to improve the strength of the battery cell, to reduce the expansion of thickness of battery cell at high temperature and to simplify the battery production process. The water-based composition for modifying the diaphragm for the lithium ion battery comprises a water-based adhesive for the lithium ion battery and organic nano-particle fillings dispersed in the water-based adhesive; the organic nano-particle fillings are nano-particles of the polymers 1 or nano-particles at least wrapped with the polymers 1 on the surfaces; and the particle sizes of the organic nano-particles are 50 to 2000 nm.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: December 3, 2019
    Assignee: CHENGDU ZHONGKE LAIFANG POWER SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Zhonglai Pan, Lu Wang, Jiandong Gao, Rengui Li, Hongchang Du, Jiamin Deng, Zhenghua Deng
  • Publication number: 20170162848
    Abstract: The invention belongs to the technical field of the preparation of lithium ion batteries, and particularly relates to a water-based composition used for modifying diaphragm of lithium ion batteries and a polyolefin diaphragm for lithium ion batteries and lithium ion batteries. The invention aims to improve the strength of the battery cell, to reduce the expansion of thickness of battery cell at high temperature and to simplify the battery production process. The water-based composition for modifying the diaphragm for the lithium ion battery comprises a water-based adhesive for the lithium ion battery and organic nano-particle fillings dispersed in the water-based adhesive; the organic nano-particle fillings are nano-particles of the polymers 1 or nano-particles at least wrapped with the polymers 1 on the surfaces; and the particle sizes of the organic nano-particles are 50 to 2000 nm.
    Type: Application
    Filed: July 11, 2014
    Publication date: June 8, 2017
    Inventors: Zhonglai PAN, Lu WANG, Jiandong GAO, Rengui LI, Hongchang DU, Jiamin DENG, Zhenghua DENG
  • Patent number: 8808925
    Abstract: Microporous polyolefin membrane modified by aqueous polymer of the invention is obtained by the following steps: copolymerizing 100 parts of a water-soluble polymer, 30-500 parts of a hydrophobic monomer, 0-200 parts of a hydrophilic monomer and 1-5 parts of an initiator into polymeric colloid emulsion; adding 0-100% of an inorganic filler and 20-100% of a plasticizer based on 100% solid content of the polymeric colloid emulsion to obtain slurry; and coating the slurry on one or two surfaces of the surface modified microporous polyolefin membrane and then drying. The microporous polyolefin membrane modified by aqueous polymer has thermal shutdown effect and little thermal shrinkage, and improves the main problem of shrinkage of the microporous polyolefin membrane at high temperature.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: August 19, 2014
    Assignee: Changzhou Zhongke Laifang Power Development Co., Ltd.
    Inventors: Zhonglai Pan, Zhenghua Den, Rengui Li, Lu Wang, Kai Wang, Jiamin Deng, Hongchang Du, Jiandong Gao, Jishuan Suo
  • Patent number: 8389587
    Abstract: Provided are separators used in power accumulators such as lithium ion secondary batteries and a preparation method thereof. The said separators are obtained through following steps: providing a polymer colloidal emulsion through a polymerization reaction of polyvinyl alcohol, hydrophobic monomer and hydrophilic monomer in water solution initiated by an initiator; coating a plastic substrate with the said polymer colloidal emulsion using tape-casting method; drying the plastic substrate coated with the polymer colloidal emulsion, and then obtaining the said separators by delaminating them from the substrate. The said separators have good liquid absorbability, high liquid absorption rate and retention, low resistivity, good mechanical strength and good thermal stability (little thermal shrinkage and little size distortion) as well as electrochemical stability. The prepared lithium ion batteries have good cycle stability and long service life.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: March 5, 2013
    Assignee: Changzhou Zhongke Laifang Power Development Co., Ltd.
    Inventors: Zhonglai Pan, Zhenghua Deng, Rengui Li, Lu Wang, Jiamin Deng, Hongchang Du, Jiandong Gao, Jishuan Suo
  • Publication number: 20110229768
    Abstract: Microporous polyolefin membrane modified by aqueous polymer of the invention is obtained by the following steps: copolymerizing 100 parts of a water-soluble polymer, 30-500 parts of a hydrophobic monomer, 0-200 parts of a hydrophilic monomer and 1-5 parts of an initiator into polymeric colloid emulsion; adding 0-100% of an inorganic filler and 20-100% of a plasticizer based on 100% solid content of the polymeric colloid emulsion to obtain slurry; and coating the slurry on one or two surfaces of the surface modified microporous polyolefin membrane and then drying. The microporous polyolefin membrane modified by aqueous polymer has thermal shutdown effect and little thermal shrinkage, and improves the main problem of shrinkage of the microporous polyolefin membrane at high temperature.
    Type: Application
    Filed: September 16, 2009
    Publication date: September 22, 2011
    Applicant: Changzhou Zhongke Laifang Power Development Co., Ltd.
    Inventors: Zhonglai Pan, Zhenghua Den, Rengui Li, Lu Wang, Kai Wang, Jiamin Deng, Hongchang Du, Jiandong Gao, Jishuan Suo
  • Publication number: 20100178545
    Abstract: Provided are separators used in power accumulators such as lithium ion secondary batteries and a preparation method thereof. The said separators are obtained through following steps: providing a polymer colloidal emulsion through a polymerization reaction of polyvinyl alcohol, hydrophobic monomer and hydrophilic monomer in water solution initiated by an initiator; coating a plastic substrate with the said polymer colloidal emulsion using tape-casting method; drying the plastic substrate coated with the polymer colloidal emulsion, and then obtaining the said separators by delaminating them from the substrate. The said separators have good liquid absorbability, high liquid absorption rate and retention, low resistivity, good mechanical strength and good thermal stability (little thermal shrinkage and little size distortion) as well as electrochemical stability. The prepared lithium ion batteries have good cycle stability and long service life.
    Type: Application
    Filed: October 31, 2008
    Publication date: July 15, 2010
    Applicant: CHANGZHOU ZHONGKE LAIFANG POWER SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Zhonglai Pan, Zhenghua Deng, Rengui Li, Lu Wang, Jiamin Deng, Hongchang Du, Jiandong Gao, Jishuan Suo